LAB II: Spinal Cord & Nerves, Vertebral Column I, Pectoral Girdle
superior
C1-C7 exit (superior/inferior) to respective vertebrae
inferior
C8 and following spinal nerves exit (superior/inferior) to respective vertebrae
7, 12, 5, 5, 4
Number of Vertebrae __ cervical __ thoracic __ lumbar __ sacral __ coccygeal
8, 12, 5, 5, 1
Number of spinal nerves __ cervical __ thoracic __ lumbar __ sacral __ cocygeal
33, 5
____ vertebrae are organized into ____ regions
rootlets
______ from a single spinal cord segment converge to form a root
lesser tubercle of humerus
anterior
dermatome
area of skin where a spinal nerve is responsible for sensation
L1 and L2
between what vertebral discs can you find the conus medullaris?
dorsal root ganglion
big bump
filum terminale
continuation of pia mater
arachnoid mater
deep to dura mater, webbing
myotome
group of muscles innervated by a nerve responsible for motor function
surgical neck
is the surgical neck or anatomical neck of the humerus more commonly fractured?
greater tubercle of humerus
lateral
deltoid tuberosity
lateral side, small protrusion
pia mater
microscopic layer of meninges, directly on spinal cord not visible to the naked eye
dura mater
most superficial layer of meninges, extends over brain
ventral root
motor function only
nerve plexus
network of nerves
coronoid fossa
oriented anteriorly
glenoid fossa
oriented laterally
olecranon fossa
oriented posteriorly
scapular spine
oriented posteriorly
subdural
potential space btwn dura & arachnoid mater
lumbosacral enlargement of spinal cord
sensory & motor neurons for the lower limb
cervical enlargement of spinal cord
sensory & motor neurons for the upper limb
dorsal root
sensory function only
subarachnoid
space between arachnoid & pia mater contains CSF (cerebrospinal fluid)
epidural
space between bone and dura mater
both motor & sensory function
spinal nerve, dorsal ramus, ventral ramus have...
cauda equina
spinal nerves, hairlike after conus medullaris
conus medullaris
tapering inferior end of spinal cord; typically @ intervertebral disc btwn L1 and L2
sternum, acromion of scapula
the clavicle articulates with the...
Between L3 and L4 or L4 and L5
what is the site of a lumbar puncture?
scapular notch; suprascapular n. and suprascapular a.
what is this and what runs through it?
glenohumeral joint
what joint is dislocated in a shoulder dislocation?
acromioclavicular joint
what joint is dislocated in a shoulder separation?
radial n. and deep brachial a.
what runs in the radial (spiral) groove
intervertebral foramina
where spinal nerves exit vertebral column
acromioclavicular (AC) joint
where the acromion articulates the lateral end of the clavicle
glenohumeral joint
where the head of the humerus articulated w/ glenoid fossa
sternoclavicular joint
where the sternal end of the clavicle articulates with the sternum
scapulothoracic articulation
where the thoracic ribcage articulates with the scapula
